1. Assistant Professor, Delft Univ. of Technology, Stevinweg 1, 2628 CN, Delft, The Netherlands (corresponding author).
2. Center Director and Research Leader, Water Management and Conservation Research Unit, U.S. Arid-Land Agricultural Research Center, 21881 North Cardon Ln., Maricopa, AZ 85238.
3. Electrical Engineer, Water Management and Conservation Research Unit, U.S. Arid-Land Agricultural Research Center, 21881 North Cardon Ln., Maricopa, AZ 85238.
4. Consultant, DHV Consultancy and Engineering, Laan 1914 no. 35, 3818 EX, Amersfoort, The Netherlands.
5. Agricultural Engineer, Water Management and Conservation Research Unit, U.S. Arid-Land Agricultural Research Center, 21881 North Cardon Ln., Maricopa, AZ 85238.